Yoshida made it very clear from the get go that his remake of FF: XIV was not going to shift the paradigm. He made it very clear that he intended to go with the safe route and try to make this game as polished as a tab targeting MMORPG could be. There are other MMO that have either already been released or are currently in development that set out to accomplish what you described in the OP. Neverwinter and Guild Wars 2 are not your generic tab target MMOs and both these games have been fairly successful. Elder Scrolls Online and Everquest Next are two more games that will not be featuring standard tab targeting combat and Everquest has promised user generated content. Tab targeting fantasy MMOs is actually a very niche genre and there are already countless other MMOs that differ vastly from this genre.

XIV is already laughed at by developers and critics that claim that it is too generic. Have you seen how much hype there is for the other MMOs that are currently in development?